Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03G - Electrography; Electrophotography; Magnetography › G03G 15 - Apparatus for electrographic processes using a charge pattern
Patents for G03G 15 - Apparatus for electrographic processes using a charge pattern (115,618)
06/1991
06/25/1991US5027159 Electrophotographic image forming apparatus capable of developing normal and inverted images
06/25/1991US5027158 Vertical print engine for electrophotographic apparatus
06/25/1991US5027157 Developing device provided with electrodes for inducing a traveling wave on the developing material
06/25/1991US5027156 Seal structure for a chamber means containing a developer material
06/25/1991US5027155 Image forming apparatus including mechanisms for exposure lamp exchange
06/25/1991US5027153 Image forming apparatus with card device input
06/25/1991US5027152 Image-forming machine having a process unit detachably mountable on a movable supporting and guiding means
06/25/1991US5026620 Using developer with inorganic fine particles of pH 7 or more and grounded heat roller with resin coating containing carbon black
06/25/1991US5026276 Image fixing apparatus using a detachable film
06/25/1991US5026044 Dual mode document registration system
06/25/1991US5026043 Overlapped-transfer preventing paper supply device in image forming apparatus
06/25/1991US5026042 Sheet feeder for copiers and printers
06/25/1991US5026037 Copying machine with multiple transport functions inclusive of duplex and composite copying from an intermediate feed tray by selectives top or bottom feed
06/25/1991CA1285292C Two-up automatic document feeder for simplex to duplex copying
06/20/1991DE4039702A1 Sheet feed system suitable for photosensitive film - uses roller pair with integral drive motor e.g. for image recorder and reader
06/20/1991DE3941195A1 Fixing roller cleaning appts. - applies flexible wiper under given tension with long edge fully covering convex surface line like knife
06/20/1991CA2032274A1 Reversal development of latent electrostatic images on xeroprinting masters
06/19/1991EP0433014A2 Electronic photography apparatus
06/19/1991EP0433012A2 Developer cartridges
06/19/1991EP0432998A2 Dual AC development system
06/19/1991EP0432917A2 Electrophotographic apparatus
06/19/1991EP0432752A2 Image forming method and image forming apparatus
06/19/1991EP0432687A2 An image fixing apparatus
06/19/1991EP0432616A2 Page printer with machine-readable-character-based controls
06/19/1991EP0432520A2 Image forming apparatus
06/19/1991EP0432476A2 Electrophotographic apparatus with multiple speed mode
06/19/1991EP0432458A2 Image-wise adhesion layers for printing
06/19/1991EP0432302A1 Electrophotography system
06/19/1991EP0432298A1 Automatic paper introduction device for electrophotographic printing engine
06/19/1991EP0432295A1 Feed mechanism for record carrier in continuous form in a photoelectric printer or a copying machine
06/19/1991CN1052381A Auxiliary paper feeding device for anti-dual sheet of thin paper copying
06/18/1991US5025323 Deveoloping unit switching device for a printer
06/18/1991US5025292 Method and apparatus for improving a multi-color electrophotographic image using heat fusing
06/18/1991US5025291 Edge effect compensation in high frequency vibratory energy producing devices for electrophotographic imaging
06/18/1991US5025290 Pulsed voltage development electrode cleaner
06/18/1991US5025289 Development apparatus having self-closing purging mechanism
06/18/1991US5025288 Image forming apparatus capable of preventing simultaneous rotation of the magnet roll and the developing sleeve
06/18/1991US5025287 Development apparatus having dual interleaving paddle mixers
06/18/1991US5025286 Laser beam image forming apparatus with SOS Detection
06/18/1991US5025269 Color electrostatic recording apparatus
06/18/1991US5025155 Charging device for electrophotographic systems
06/18/1991US5024431 Sheet transport device with easy sheet jam handling
06/18/1991US5024181 Method for the development of an electrostatic latent image
06/13/1991WO1991008639A1 Copier with auto scaling, auto paper select, and window scaling
06/13/1991WO1991008523A1 Magnetic brush development apparatus
06/13/1991WO1991008522A1 Electrostatic copying method
06/13/1991DE4039001A1 Automatic paper return feed system for duplex copier
06/13/1991CA2031942A1 Page printer with machine-readable-character-based controls
06/12/1991EP0431939A2 Post-collation copying
06/12/1991EP0431921A2 Post-collation duplex copying system
06/12/1991EP0431617A2 Fixing device
06/12/1991EP0431615A2 Cartridge unit
06/12/1991EP0431559A2 Image forming apparatus having charging means
06/12/1991EP0431334A2 Electrical component with conductive path
06/12/1991EP0431308A2 Conflict resolution with warning in a reprographic system
06/12/1991EP0431110A1 Container for particulate material.
06/11/1991US5023817 Jam history and diagnostics
06/11/1991US5023748 Corona wire cleaning device for a corona unit
06/11/1991US5023708 Color image forming apparatus for superposing a plurality of images
06/11/1991US5023670 Photoreceptor
06/11/1991US5023669 Image forming apparatus having an intermediate sheet alignment and receiving unit
06/11/1991US5023668 Electrographic
06/11/1991US5023667 Apparatus for preventing damage to both an electrophotographic printer and a recording form used with the printer
06/11/1991US5023666 Image forming apparatus using an image carrier with multiple layers
06/11/1991US5023665 Excess liquid carrier removal apparatus
06/11/1991US5023664 Non-mechanical printer or copier means comprising an exposure means arranged in the development region
06/11/1991US5023663 Copying magnification setting device for an electrophotographic copying apparatus
06/11/1991US5023662 Image formation with manual and automatic exposure adjustment
06/11/1991US5023661 Xerographic
06/11/1991US5023660 Image bearing member and driving mechanism therefor
06/11/1991US5023658 Image forming apparatus
06/11/1991US5023657 Micro-image handling apparatus with automatic focusing function
06/11/1991US5023633 Electrostatic printer using continuous paper
06/11/1991US5023632 Electrophotographic image forming method
06/11/1991US5023464 Fixing apparatus and recording apparatus
06/11/1991US5023448 Beam position sensor for a light beam scanner
06/11/1991US5023038 Method and apparatus for texturizing toner image bearing receiving sheets and product produced thereby
06/11/1991US5022641 Recirculating feeder of sheets
06/11/1991US5022640 Auto-duplex/simplex feeder module
06/06/1991DE4038307A1 Transporting copy papers in printer or copier - leading to stacking tray or return feed unit for double-sided copying after being turned over
06/06/1991DE4038271A1 Controlling transport of copy sheets in duplex machine - stacking and feeding to duplex unit in predetermined position if jam occurs
06/05/1991EP0430758A2 Multi-functional laser printer
06/05/1991EP0430690A2 Toner level detection system
06/05/1991EP0430677A2 Fixing device
06/05/1991EP0430666A2 Multicolor developing device
06/05/1991EP0430648A2 Corona charge system and apparatus for electrophotographic printing press
06/05/1991EP0430546A2 Color image recording apparatus
06/05/1991EP0430507A2 Method for fixing a toner image
06/05/1991EP0430346A1 Method of and apparatus for forming a multi-colour image
06/05/1991EP0430218A2 Automatic document conveying device
06/05/1991EP0430098A2 Feed roller for mixing a powder
06/05/1991EP0430076A2 Image forming method
06/05/1991EP0430038A2 Electrophotographic development process
06/05/1991EP0429684A1 Developing apparatus
06/05/1991EP0429682A1 Developing apparatus
06/05/1991EP0429657A1 Image forming apparatus
06/05/1991CN1012764B Fixing device for fixing a powder image on a receiving sheet
06/05/1991CN1012763B Split scanning copier
06/05/1991CA2025903A1 Electrical component with conductive path
06/04/1991US5021838 Preferred toner/carrier properties
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